Unity Desktop Environment is described as 'Unity is a shell interface for the Gnome desktop environment developed by Canonical Ltd for its Ubuntu operating system. It is designed to make more efficient use of space given the limited screen size of netbooks' and is a popular desktop environment in the os & utilities category. There are more than 25 alternatives to Unity Desktop Environment for a variety of platforms, including Linux, BSD, Windows, Mac and FreeBSD apps. The best Unity Desktop Environment alternative is KDE Plasma, which is both free and Open Source. Other great apps like Unity Desktop Environment are GNOME, Xfce, Cinnamon and MATE.